EP0600386A1 - Walking beam furnace - Google Patents

Walking beam furnace Download PDF

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Publication number
EP0600386A1
EP0600386A1 EP93119077A EP93119077A EP0600386A1 EP 0600386 A1 EP0600386 A1 EP 0600386A1 EP 93119077 A EP93119077 A EP 93119077A EP 93119077 A EP93119077 A EP 93119077A EP 0600386 A1 EP0600386 A1 EP 0600386A1
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EP
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Prior art keywords
furnace
furnace according
beams
lift tunnel
longitudinal direction
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EP93119077A
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German (de)
French (fr)
Inventor
Werner Strohmenger
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/26—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/201—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace walking beam furnace
    • F27B9/202—Conveyor mechanisms therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

Definitions

  • Tunnel furnaces are known in a wide variety of embodiments, cf. e.g. DE-OS 37 14 014, 30 26 640.
  • the object of the present invention is to provide a furnace in which the specific energy consumption is considerably reduced compared to conventional tunnel furnaces.
  • the furnace according to the invention can also be sealed laterally better, since only the support surface is moved.
  • An excellent seal results in particular from the use of continuous water channels for sealing aprons.
  • spacers which can be located in particular in the beam support surface, are also transported through the furnace and are also made of heat-resistant material, e.g. Ceramics.
  • an inadmissible lateral migration of the beams can also be monitored in such an oven, e.g. by means of an ultrasonic sensor.
  • an interference signal can be output or a correction can be made by the lifting device.
  • furnace is divided in the transverse direction, ie if the bars are divided, it is also possible to use the counterflow heat exchanger principle to move, ie to let the two halves move in opposite directions through the oven (see, for example, DE-OS 39 34 705).
  • the furnace space is formed by the ceiling 1 and the side walls 2.
  • the support surface for the not shown, to be fired trim consists of individual bars 3, 4 made of silicon carbide. These bars 3 and 4, which lie transversely to the longitudinal direction of the furnace, each lie laterally on supports 5 and 7 and in the center on supports 6.
  • the bars 3 and 4 are connected to one another in groups by closely adjacent support brackets 8, as shown in more detail in FIG. 3.
  • the recesses for the beams 3, 4 to be received and the bores for receiving screw connections of the beam and the holder 8 are indicated at 19.
  • a heat-insulated lifting device 9 (lifting table) with supports 91 serves for synchronous lifting of the beams 3, 4 and can be displaced in the double arrow direction 17 by hydraulic rams 92 and can be moved in the longitudinal direction 16 of the furnace by rolling devices 11.
  • the beams 3, 4 are lifted synchronously in the double arrow direction 17 by the punches 91 and moved in the longitudinal direction 16 of the oven by means of rolling devices 11, to the next one Drop-off point.
  • the beams 3, 4 with the trimmings are then lowered again and the lifting device 9, ie the supports 91, is moved back into its starting position by means of the rolling device 11.
  • the rolling device can consist of endless roller chains, such as those used for transporting heavy loads.
  • the support beams 3, 4 or the trimmings are sealed at the bottom by insulation 12 in the form of mats and insulating wool.
  • insulation 12 in the form of mats and insulating wool.
  • water seals 13 are provided on the right and left, which are arranged continuously in the longitudinal direction of the furnace and encompass the face, i.e. form a closed seal. Since in the embodiment shown there are two beams in the transverse direction of the furnace which are supported in the center, it is of course also necessary to provide a seal between the support pillar 6 and the lifting device 9 together with the support surface. Continuous water seals 21 and 22 are also used for this purpose. If the furnace is narrower, a continuous bar can be used.
  • 18 locks 14 and 15 are provided at the entrance and exit of the actual furnace for placing or removing the trimmings.
  • the bars 3 and 4 leaving the furnace are returned by suitable devices.
  • the connection of the individual beams 3 or 4 to each other can be done, for example, in pairs, so that two pairs of beams with trimmings enter or leave the actual furnace space.
  • the locks 14, 15 have the advantage that no uncontrolled air flows disturb and energy is lost.
  • the water seals 13 consist of the immersion plates 131 fastened to the lifting device 9 and the fixed troughs 133 filled with water 132.
  • the immersion plates 131 and the troughs 133 are also each provided on the end face.

Abstract

The invention relates to a tunnel furnace for firing ceramic articles, in which the support for the articles consists of individual beams (3, 4) which can be lifted synchronously and displaced in the longitudinal direction (16) of the furnace. <IMAGE>

Description

Tunnelöfen sind in den verschiedensten Ausführungsformen bekannt, vgl. z.B. DE-OS 37 14 014, 30 26 640.Tunnel furnaces are known in a wide variety of embodiments, cf. e.g. DE-OS 37 14 014, 30 26 640.

In den meisten Fällen wird das zu brennende Keramikgut auf Wagen durch den Ofen transportiert. Dies hat energetisch gesehen den Nachteil, daß die relativ große Masse der Wagen bei jedem Durchlauf aufs neue erwärmt werden muß. Ferner ist es nicht immer ganz einfach, die Transportwagen gegeneinander und insbesondere seitlich so abzudichten, daß nicht doch ein erheblicher Wärmeabfluß stattfindet.In most cases, the ceramic goods to be fired are transported through the furnace on trolleys. From an energy point of view, this has the disadvantage that the relatively large mass of the wagons has to be reheated each time it is run. Furthermore, it is not always very easy to seal the trolleys against one another and, in particular, laterally in such a way that a considerable heat dissipation does not occur.

Die Aufgabe der vorliegenden Erfindung besteht darin, einen Ofen zu schaffen, bei dem der spezifische Energieverbrauch gegenüber herkömmlichen Tunnelöfen erheblich gesenkt ist.The object of the present invention is to provide a furnace in which the specific energy consumption is considerably reduced compared to conventional tunnel furnaces.

Diese Aufgabe wird mit einem Hubtunnelofen mit folgenden Merkmalen gelöst:

  • a) die Auflage für den zu brennenden Besatz besteht aus einzelnen, quer zur Ofenlängsrichtung liegenden Balken aus wärmefesten Material,
  • b) die Balken sind durch eine Hubvorrichtung insgesamt synchron anhebbar, in Ofenlängsrichtung verschiebbar und absetzbar und
  • c) die Hubvorrichtung fährt nach einem oder mehreren Verschiebeschritten in ihre Ausgangsposition zurück.
This task is solved with a lifting tunnel furnace with the following features:
  • a) the support for the stock to be burned consists of individual beams of heat-resistant material lying transversely to the longitudinal direction of the furnace,
  • b) the bars can be lifted synchronously overall by a lifting device, displaceable and removable in the longitudinal direction of the furnace and
  • c) the lifting device moves back to its starting position after one or more displacement steps.

Auf diese Weise wird erheblich Energie gespart, da nur die relativ massearme Auflagefläche in Form der Balken wieder erwärmt werden muß.In this way, considerable energy is saved, since only the relatively low-mass bearing surface in the form of the bars has to be reheated.

Auch läßt sich der erfindungsgemäße Ofen besser seitlich abdichten, da nur die Auflagefläche bewegt wird. Eine hervorragende Abdichtung ergibt sich insbesondere durch die Verwendung von durchgehenden Wasserrinnen für Abdichtungsschürzen.The furnace according to the invention can also be sealed laterally better, since only the support surface is moved. An excellent seal results in particular from the use of continuous water channels for sealing aprons.

Je nach der Baubreite des Ofens kann es vorteilhaft sein, statt eines durchgehenden Balkens mehrere Balken zu nutzen und hierfür im Ofen entsprechende Auflagestützen vorzusehen.Depending on the overall width of the furnace, it may be advantageous to use several beams instead of one continuous beam and to provide appropriate support supports in the furnace.

Damit die Balken nicht unkontrolliert wandern können,ist es ferner von Vorteil, zumindest eine Gruppe von Balken über Abstandshalter miteinander fest zu verbinden. Diese Abstandshalter, die insbesondere in der Balkenauflagefläche liegen können, werden mit durch den Ofen transportiert und sind ebenfalls aus wärmebeständigem Material, z.B. Keramik, hergestellt.So that the bars cannot move in an uncontrolled manner, it is also advantageous to firmly connect at least one group of bars to one another via spacers. These spacers, which can be located in particular in the beam support surface, are also transported through the furnace and are also made of heat-resistant material, e.g. Ceramics.

Im Rahmen des vorstehend beschriebenen Ofenkonzeptes sind naturgemäß die bekannten Regel- und Steuerverfahren für Öfen einsetzbar.Within the framework of the furnace concept described above, the known regulating and control methods for furnaces can of course be used.

Zusätzlich kann in einem solchen Ofen auch noch eine unzulässige seitliche Wanderung der Balken überwacht werden, z.B. mittels eines Ultraschallsensors. Bei unzulässigen Abweichungen kann ein Störsignal ausgegeben werden oder eine Korrektur durch die Hubvorrichtung vorgenommen werden.In addition, an inadmissible lateral migration of the beams can also be monitored in such an oven, e.g. by means of an ultrasonic sensor. In the event of impermissible deviations, an interference signal can be output or a correction can be made by the lifting device.

Ist der Ofen in Querrichtung unterteilt, d.h. sind die Balken unterteilt, ist es auch möglich, den Ofen im GegenstromWärmetauscherprinzip zu bewegen, d.h. die beiden Hälften gegensinnig durch den Ofen wandern zu lassen (vgl. hierzu z.B. DE-OS 39 34 705).If the furnace is divided in the transverse direction, ie if the bars are divided, it is also possible to use the counterflow heat exchanger principle to move, ie to let the two halves move in opposite directions through the oven (see, for example, DE-OS 39 34 705).

Anhand eines in der Zeichnung dargestellten Ausführungsbeispiels sei die Erfindung näher erläutert; es zeigen:

Fig. 1
einen Querschnitt durch den Ofen,
Fig. 2
einen schematischen Längsschnitt durch den Ofen und
Fig. 3
eine Draufsicht auf Abstandshalter für die Balken.
The invention will be explained in more detail with reference to an embodiment shown in the drawing; show it:
Fig. 1
a cross section through the furnace,
Fig. 2
a schematic longitudinal section through the furnace and
Fig. 3
a top view of spacers for the beams.

Wie aus Fig. 1 ersichtlich, wird der Ofenraum durch die Decke 1 und die seitlichen Wände 2 gebildet.1, the furnace space is formed by the ceiling 1 and the side walls 2.

Die Auflagefläche für den nichtgezeigten, zu brennenden Besatz besteht aus einzelnen Balken 3, 4 aus Siliziumkarbid. Diese quer zur Ofenlängsrichtung liegenden Balken 3 und 4 liegen jeweils seitlich auf Stützen 5 und 7 und mittig auf Stützen 6 auf. Die Balken 3 bzw. 4 sind gruppenweise durch dicht aneinandergrenzende Auflagehalterungen 8 miteinander verbunden, wie in Fig. 3 näher dargestellt. Hierbei sind mit 19 die Ausnehmungen für die aufzunehmenden Balken 3, 4 und mit 20 die Bohrungen für die Aufnahme von Verschraubungen von Balken und Halterung 8 angedeutet.The support surface for the not shown, to be fired trim consists of individual bars 3, 4 made of silicon carbide. These bars 3 and 4, which lie transversely to the longitudinal direction of the furnace, each lie laterally on supports 5 and 7 and in the center on supports 6. The bars 3 and 4 are connected to one another in groups by closely adjacent support brackets 8, as shown in more detail in FIG. 3. The recesses for the beams 3, 4 to be received and the bores for receiving screw connections of the beam and the holder 8 are indicated at 19.

Zum synchronen Anheben der Balken 3, 4 dient eine wärmeisolierte Hubvorrichtung 9 (Hubtisch) mit Trägern 91, die durch hydraulische Stempel 92 in Doppelpfeilrichtung 17 verschiebbar und durch Rollvorrichtungen 11 in Ofenlängsrichtung 16 verfahrbar sind.A heat-insulated lifting device 9 (lifting table) with supports 91 serves for synchronous lifting of the beams 3, 4 and can be displaced in the double arrow direction 17 by hydraulic rams 92 and can be moved in the longitudinal direction 16 of the furnace by rolling devices 11.

Zum Transport des Besatzes durch den Ofen werden die Balken 3, 4 durch die Stempel 91 synchron in Doppelpfeilrichtung 17 angehoben und in Längsrichtung 16 des Ofens mittels Rollvorrichtungen 11 verfahren, und zwar bis zur nächsten Absetzstelle. Hier werden dann die Balken 3, 4 mit dem Besatz wieder abgesenkt und die Hubvorrichtung 9, d.h. die Träger 91, mittels der Rollvorrichtung 11 in ihre Ausgangslage zurückgefahren. Die Rollvorrichtung kann dabei z.B. aus Endlosrollketten bestehen, wie sie z.B. zum Transport von schweren Lasten benutzt werden.To transport the trimmings through the oven, the beams 3, 4 are lifted synchronously in the double arrow direction 17 by the punches 91 and moved in the longitudinal direction 16 of the oven by means of rolling devices 11, to the next one Drop-off point. Here the beams 3, 4 with the trimmings are then lowered again and the lifting device 9, ie the supports 91, is moved back into its starting position by means of the rolling device 11. The rolling device can consist of endless roller chains, such as those used for transporting heavy loads.

Die Tragbalken 3, 4 bzw. der Besatz sind nach unten hin durch eine Isolation 12 in Form von Matten und Isolierwolle abgedichtet. Zur seitlichen Abdichtung sind rechts und links Wasserabdichtungen 13 vorgesehen, die in Ofenlängsrichtung durchgehend angeordnet sind und stirnseitig umgreifen, d.h. eine geschlossene Abdichtung bilden. Da in der gezeigten Ausführungsform zwei Balken in Ofenquerrichtung vorhanden sind, die mittig gestützt werden, ist naturgemäß auch hier für eine Abdichtung zwischen Stützpfeiler 6 und der Hubvorrichtung 9 samt Auflagefläche zu sorgen. Hierzu werden ebenfalls durchgehende Wasserabdichtungen 21 und 22 verwendet. Bei schmälerem Ofen kann ein durchgehender Balken verwendet werden.The support beams 3, 4 or the trimmings are sealed at the bottom by insulation 12 in the form of mats and insulating wool. For lateral sealing, water seals 13 are provided on the right and left, which are arranged continuously in the longitudinal direction of the furnace and encompass the face, i.e. form a closed seal. Since in the embodiment shown there are two beams in the transverse direction of the furnace which are supported in the center, it is of course also necessary to provide a seal between the support pillar 6 and the lifting device 9 together with the support surface. Continuous water seals 21 and 22 are also used for this purpose. If the furnace is narrower, a continuous bar can be used.

Wie aus der schematischen Fig. 2 ersichtlich, sind am Ein- und Ausgang des eigentlichen Ofens 18 Schleusen 14 und 15 für Auflage bzw. Abnahme des Besatzes vorgesehen. Die den Ofen verlassenden Balken 3 bzw. 4 werden durch geeignete Vorrichtungen wieder zurückgeführt. Die Verbindung der einzelnen Balken 3 bzw. 4 jeweils miteinander kann z.B. paarweise erfolgen, so daß jeweils zwei Balkenpaare mit Besatz in den eigentlichen Ofenraum eintreten bzw. diesen verlassen. Die Schleusen 14, 15 haben den Vorteil, daß keine unkontrollierten Luftmengenströme stören und Energie verloren geht.As can be seen from the schematic Fig. 2, 18 locks 14 and 15 are provided at the entrance and exit of the actual furnace for placing or removing the trimmings. The bars 3 and 4 leaving the furnace are returned by suitable devices. The connection of the individual beams 3 or 4 to each other can be done, for example, in pairs, so that two pairs of beams with trimmings enter or leave the actual furnace space. The locks 14, 15 have the advantage that no uncontrolled air flows disturb and energy is lost.

Die Wasserabdichtugen 13 bestehen aus dem an der Hubvorrichtung 9 befestigten Eintauchblechen 131 und den mit Wasser 132 gefüllten, feststehenden Trögen 133. Die Eintauchbleche 131 und die Tröge 133 sind auch jeweils stirnseitig vorgesehen.The water seals 13 consist of the immersion plates 131 fastened to the lifting device 9 and the fixed troughs 133 filled with water 132. The immersion plates 131 and the troughs 133 are also each provided on the end face.

Insgesamt ergibt sich eine sehr wirtschaftliche Ofenkonstruktion, bei der die heißen Brenngase in den Raum unterhalb der Balken 3, 4 eingeblasen werden, zwischen den hohlen Balken 3, 4 bzw. dem Brenngut hochströmen und das Brenngut gleichmäßig erwärmen.
Eine etwas abweichende Konstruktion mit gleicher Wirkungist dadurch gegeben, daß auf Schienen fahrende wärmeisolierende Wagengestelle vorgesehen werden, auf denen die Balken mit Abstand angeordnet sind. Die Hubbewegung kommt durch das Anheben der Schienen und die Längsbewegung durch das Längsverfahren der miteinander lösbar verbundenen Wagengestelle zustande, d.h., man hat eine Art verfahrbaren Hubtisch, der jedoch bei Störfällen getrennt werden kann. Die Brenngase werden auch hier in den Raum zwischen der Hubtischoberfläche und den Balken eingeblasen.Overall, there is a very economical furnace design, in which the hot fuel gases are blown into the space below the bars 3, 4, flow up between the hollow bars 3, 4 or the firing material and heat the firing material uniformly.
A somewhat different construction with the same effect is given by the provision of heat-insulating trolleys on rails, on which the beams are arranged at a distance. The lifting movement is caused by the lifting of the rails and the longitudinal movement by the longitudinal movement of the carriage frames which are releasably connected to one another, ie there is a type of movable lifting table which, however, can be separated in the event of faults. The fuel gases are also blown into the space between the lift table surface and the beams.

Claims (9)

Hubtunnelofen zum Brennen von keramischem Gut mit folgenden Merkmalen: a) die Auflage für den zu brennenden Besatz besteht aus einzelnen, quer zur Ofenlängsrichtung liegenden Balken (3, 4) aus wärmefestem Material, b) die Balken (3, 4) sind durch eine Hubvorrichtung (9) insgesamt synchron anhebbar, in Ofenlängsrichtung (16) verschiebbar und absetzbar, c) die Balken (3, 4,) sind durch mittransportierbare Abstandshalter (8) in ihrer relativen Lage zueinander gehalten und d) die Bewegung der Balken (3, 4) quer zur Ofenlängsrichtung (16) ist überwachbar und korrigierbar. Lift tunnel kiln for firing ceramic goods with the following features: a) the support for the stock to be burned consists of individual beams (3, 4) lying transversely to the longitudinal direction of the furnace, made of heat-resistant material, b) the bars (3, 4) can be lifted synchronously overall by a lifting device (9), displaced and set down in the longitudinal direction of the furnace (16), c) the bars (3, 4,) are held in their relative position to one another by transportable spacers (8) and d) the movement of the bars (3, 4) transverse to the longitudinal direction of the furnace (16) can be monitored and corrected. Hubtunnelofen nach Anspruch 1, bei dem die Hubvorrichtung (9) hydraulisch bewegbare Stempel (92) und Rollvorrichtungen (11) umfaßt.Lift tunnel furnace according to claim 1, wherein the lifting device (9) comprises hydraulically movable punches (92) and rolling devices (11). Hubtunnelofen nach Anspruch 1, bei dem die Balken (3, 4) in Ofenquerrichtung unterteilt sind.Lift tunnel furnace according to claim 1, wherein the beams (3, 4) are divided in the transverse direction of the furnace. Hubtunnelofen nach Anspruch 1, bei dem seitliche Abdichtungen (13) zwischen Ofenseitenwand (2) und Hubvorrichtung (9) vorgesehen sind.Lift tunnel furnace according to claim 1, in which lateral seals (13) are provided between the furnace side wall (2) and the lifting device (9). Hubtunnelofen nach Anspruch 4 mit - in Ofenrichtung gesehen - durchgehenden Wasserrinnen (132) und Eintauchblechen (131), die an den Stirnseiten des Ofens miteinander verbunden sind.Lift tunnel furnace according to claim 4 with - seen in the direction of the furnace - continuous water channels (132) and immersion plates (131) which are connected to one another on the end faces of the furnace. Hubtunnelofen nach Anspruch 1 mit Balken aus hochverdichtetem Siliziumkarbid.Lift tunnel furnace according to claim 1 with beams made of highly compressed silicon carbide. Hubtunnelofen nach Anspruch 1 mit Schleusen (14, 15) am Ein- und Ausgang.Lift tunnel furnace according to claim 1 with locks (14, 15) at the entrance and exit. Hubtunnelofen nach Anspruch 1, bei dem die Balken (3, 4) auf einem Hubtisch angeordnet sind, der auf anhebbaren Schienen in Ofenlängsrichtung (16) fahrbar ist.Lift tunnel furnace according to claim 1, in which the beams (3, 4) are arranged on a lifting table which can be moved in the longitudinal direction of the furnace (16) on liftable rails. Hubtunnelofen nach Anspruch 8, bei dem der Hubtisch aus miteinander verbundenen Wagengestellen besteht.Lift tunnel furnace according to claim 8, wherein the lifting table consists of interconnected car frames.
EP93119077A 1992-11-30 1993-11-26 Walking beam furnace Withdrawn EP0600386A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4240151 1992-11-30
DE4240151A DE4240151A1 (en) 1992-11-30 1992-11-30 Lift tunnel furnace

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EP0600386A1 true EP0600386A1 (en) 1994-06-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0654644A1 (en) * 1993-11-22 1995-05-24 EISENMANN MASCHINENBAU KG (Komplementär: EISENMANN-Stiftung) Process and apparatus for firing ceramics or similar ware
GB2332503A (en) * 1997-12-19 1999-06-23 Jack Beaumont Kilns Limited Tunnel kilns

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1489769A (en) * 1920-10-06 1924-04-08 Advance Furnace & Engineering Furnace
FR1283948A (en) * 1960-12-28 1962-02-09 Utilisation Ration Gaz Conveyor sole for pass-through furnaces
DE1221260B (en) * 1965-04-23 1966-07-21 Universale Ind Ofenbau Gmbh Lifting conveyor furnace with underheating
US3373979A (en) * 1966-06-01 1968-03-19 Russell B. Hammond Continuous forge furnace
DE3515856C1 (en) * 1985-05-02 1986-07-24 Ludwig Riedhammer GmbH, 8500 Nürnberg Tunnel-shaped industrial furnace
DE3744271A1 (en) * 1987-12-24 1989-07-13 Hanf Carl Elino Ind Ofenbau Furnace for carrying out a heat treatment
EP0531859A1 (en) * 1991-09-13 1993-03-17 Karl-Heinz Brakemeier Firing furnace, in particular for ceramic articles

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1489769A (en) * 1920-10-06 1924-04-08 Advance Furnace & Engineering Furnace
FR1283948A (en) * 1960-12-28 1962-02-09 Utilisation Ration Gaz Conveyor sole for pass-through furnaces
DE1221260B (en) * 1965-04-23 1966-07-21 Universale Ind Ofenbau Gmbh Lifting conveyor furnace with underheating
US3373979A (en) * 1966-06-01 1968-03-19 Russell B. Hammond Continuous forge furnace
DE3515856C1 (en) * 1985-05-02 1986-07-24 Ludwig Riedhammer GmbH, 8500 Nürnberg Tunnel-shaped industrial furnace
DE3744271A1 (en) * 1987-12-24 1989-07-13 Hanf Carl Elino Ind Ofenbau Furnace for carrying out a heat treatment
EP0531859A1 (en) * 1991-09-13 1993-03-17 Karl-Heinz Brakemeier Firing furnace, in particular for ceramic articles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0654644A1 (en) * 1993-11-22 1995-05-24 EISENMANN MASCHINENBAU KG (Komplementär: EISENMANN-Stiftung) Process and apparatus for firing ceramics or similar ware
GB2332503A (en) * 1997-12-19 1999-06-23 Jack Beaumont Kilns Limited Tunnel kilns
GB2332503B (en) * 1997-12-19 2000-10-25 Jack Beaumont Kilns Limited Tunnel kiln

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